Crash Course
Great Glands - Your Endocrine System: CrashCourse Biology
Hank fills us in on the endocrine system - the system of glands which produce and secrete different types of hormones directly into the bloodstream to regulate the body's growth, metabolism, and sexual development & function.
SciShow
Does Beer Actually Help Breastfeeding?
Maybe you've heard that drinking beer while breastfeeding is helpful? There seems to be conflicting findings, so check out this episode to dive into the research!
Bozeman Science
Fight or Flight Response
Paul Andersen explains how epinephrine is responsible for changes in chemistry of our body associated with the fight or flight response. Epinephrine released by the adrenal medulla are received by a number of organs associated with the...
Bozeman Science
Osmoregulation
Paul Andersen explains how organisms regulate their internal osmolarity or not. He starts with a brief description of osmosis and why it is important for animal cell to be surrounded by an isotonic solution. He then explains how...
TED-Ed
TED-ED: How menstruation works - Emma Bryce
At this moment, three hundred million women across the planet are experiencing the same thing: a period. The monthly menstrual cycle that gives rise to the period is a reality that most women on Earth will go through in their lives. But...
TED-Ed
TED-Ed: How to make a baby (in a lab) - Nassim Assefi and Brian A. Levine
Infertility affects 1 in 8 couples worldwide. But in the last 40 years, more than 5 million babies have been born using in vitro fertilization (IVF). How does it work? Nassim Assefi and Brian A. Levine detail the science behind making a...
SciShow
The Real Reason It's So Hard to Lose Weight
You probably know that losing weight is really hard. But it may not be just because of your cheat day frequency; your body actually fights back to make losing weight harder.
SciShow
How Do Flowers Know When to Bloom?
Flowers tend not to own calendars, so how do they know when to bloom?
TED-Ed
TED-Ed: How do your hormones work? - Emma Bryce
Over our lifetimes, our bodies undergo a series of extraordinary metamorphoses: we grow, experience puberty, and many of us reproduce. Behind the scenes, the endocrine system works constantly to orchestrate these changes. Emma Bryce...
SciShow
Why Does Coffee Make You Poop?
It's common knowledge: you drink a lot of coffee, you're definitely going to poop. What isn't common knowledge is why your body reacts that way
SciShow
Your Bones Do More Than You Think
Bones, you probably have them and they're for more than holding your body upright.
SciShow
Performance Enhancing Drugs
You've heard about them, but do you how they work? Or why they suck? Hank explains the science behind performance enhancers, including steroids, blood doping, and that stuff supposedly made out of deer antlers. You'll never look at...
TED-Ed
TED-Ed: Does stress cause pimples? - Claudia Aguirre
Which came first: the stress or the pimples? The physical reactions to stress can cause major breakouts, which, in turn, can be even more stressful! Claudia Aguirre gives just one more reason to get that stress under control.
Crash Course
Endocrine System, part 2 - Hormone Cascades: Crash Course A&P
In the second half of our look at the endocrine system, Hank discusses chemical homeostasis and hormone cascades. Specifically, he looks at the hypothalamus-pituitary-thyroid axis, or HPT axis, and all the ways your body can suffer when...
Crash Course
Endocrine System, part 1 - Glands & Hormones: Crash Course A&P
Hank begins teaching you about your endocrine system by explaining how it uses glands to produce hormones. These hormones are either amino-acid based and water soluble, or steroidal and lipid-soluble, and may target many types of cells...
Curated Video
Understanding Diabetes: Overcoming Challenges with Insulin
This video discusses diabetes, a chronic disease that affects the body's ability to regulate sugar in the blood. It explains the different types of diabetes and the importance of managing the condition through lifestyle changes and...
Curated Video
Tag-Nacht Zyklus – Warum Teenager immer müde sind
Wenn Kinder zu Teenagern werden, verschieben hormonelle Veränderungen ihren zirkadianen Rhythmus – sie werden später müde. Da Schulen sich normalerweise nicht an ihren neuen natürlichen Schlafzyklus anpassen, schlafen sie oft an...
Curated Video
Gland
An organ that produces a specific substance the body needs, such as a hormone. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
Curated Video
Diabetes
A long-term medical condition that affects the body's blood sugar levels, due to a defect in the production of the hormone insulin. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
Curated Video
Hormones
Chemical substances produced in our bodies that act as messengers, communicating between our different cells and organs. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
Curated Video
Adrenaline
Also called epinephrine, a hormone produced by the adrenal glands, which are found just above the kidneys. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Cortisol
An important hormone in the human body, produced by the adrenal glands. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
Curated Video
Melatonin and Sleep
Melatonin regulates our sleep cycle and during puberty this hormone becomes imbalanced. Could this be why teenagers are moody? Biology - Being Human - Learning Points. The hormone melatonin regulates the circadian rhythm - the body's...
Curated Video
Tropisms and Hormones
Discover the hormones that dictate whether a plant grows downwards with gravity, towards water and nutrients, or upwards towards light. Biology - Plants - Learning Points. Tropisms allow plants to seek out the best conditions for...